Rethreading tool



1951 R. J. IRESON 2,565,372

RETHREADING TOOL Filed June 6, 1946 5 Sheets-Sheet 1 HEAD or: ST EEL DauM FIG 1 Poker! J Ires'on Urn/enter Allg- 1951 v R. J. IRESON 2,565,372

RETHREADING TOOL Filed June 6, 1946 3 Sheets-Sheet 2 2052M J [reason Unverztor bq CLbt/orneq RETHREADING TOOL Filed June 6, 1946 3 Sheets-Sheet 5 Fla-5 Robert J.v freson. snverzbor' Ibq CLbtov-rzeq Patented Aug. 21, 1951 cura le-mm g RETHREADING TOOL Robert "J. Ireson, Sarnia, Ontario, Canada, assignor to Standard Oil Development Company,

a corporation of Delaware Application June 6, 1946, Serial No. 674,691

, 1 Claim.

This invention relates to a flange reformingtool, and in particular to a tool for reshaping the flanged end of an interiorly threaded, container nozzle member.

The misuse and abuse in service of containers such as barrels, which are sealed by threaded parts, normally damages the flange in the mouthpiece. The repair of this damage is most advantageously made whenever convenient at the supply centers for the normal contents of the containers. The availability of an easily usable tool to reform the damaged flanges is therefore important at such supply centers and avoids the sending of the containers to other locations for the reforming services. The tool of the present invention is a portable, easily manipulative device with easily replaceable parts.

The tool of the present invention consists of a small, adjustable, rectangular-shaped frame, usually made of iron or steel parts. The two shorter side arms are crank arms, pivotally connected at one of their ends to short bars attached to the casing for a fixed plug die or mandrel, thus completing one of the longer arms of the frame; and at their other ends, pivoted pieces held together by a length adjusting nut so as to form a toggle joint on the other longer side arm of the frame. The frame as thus constructed forms a yoke rotatable about the casing with the plug die as the fixed element. Within the casing, an interchangeable plug die is rigidly held by threading into a container nozzle. In the bars connecting the shorter arms and the casing for the plug die are sockets for two rollers capable of operating in about the same plane as the plug die. Adjustment and movement of the rollers to and from proximity to the die are easily made by movement of the length adjusting nut upon the two parts of the other longer arm of the yoke. Attached to each shorter side arm is a handle so as to permit ease of turning of the yoke frame about the plug die as the pivot. By screwing the plug die into the damaged nozzle b any convenient means of rotation of the die in the casing, the damaged nozzle flange can be reformed by compressing the outer surfaces of the flange between the rollers operating about the die.

In order that the invention may be more easily understood, the following description and illustrations of an embodiment are presented:

In Figure 1, the device with the essential parts is shown, and attachment is also indicated in its use for reforming the flange of a steel drum. Figure 2 shows the manner of connection to the flange prior to use. Figures 3 and 4 present details of the rollers in the die plug portion of the tool. Similar reference numerals are employed to designate corresponding parts of the various figures.

As illustrated, the embodiment of the invention is shown as consisting of a hardened steel plug I, die machined and threaded at one end to conform to the inside of the nozzle to be reformed.

' The other end of the die is hexagonally shaped to accommodate a standard size wrench. The plug I is fitted within a collar 2 and held within the casing 3 of a rectangular frame of iron pieces usable as a yoke with the plug die as a pivot. The casing 3 has two flanged parts, permitting the shorter arms II to be connected by pivots 4 into the rectangular frame. The die I is held within the collar 2 by means of the cap screw I6. In the short arms II, near to the pivots 4, the rollers 9 are held within sockets by means of the nuts 6 working upon the upper threaded portion of the stem of the roller. The rollers 9 have a lower circular grooved portion. The turning over of the flange and its reshaping by the rollers provides a bearing surface for the gasket which is usually inserted between the renewed surface and a plug which is later threaded into the opening containing the repaired flange. The size of the groove in the rollers 9 is determined by the extent of the turned-over edge of the head of the flange 50 of the drum I00. Between the nut 6 and the portion of the arm II is the washer I. Similarly, between the lower portion of the roller 9 and the corresponding portion of the arm I I is the washer 8. The roller is maintained within the socket portions of the arms I I by means of the screw bolt I0. Pivoted at II to the side arms I I are the pieces I2 and I3 upon the unconnected portions of which the adjustable length nut I 5 cooperates by reason of thread connections. The arms II have handles I I on either side.

The tool functions by screwing the steel plug within the damaged nozzle by adjusting a wrench into the hexagonal section of the plug I. The rollers 9 are then compressed against the outer surfaces of the nozzle flange by mean of adjustment of the nut I5 working upon the threads of the members I2 and I3 of the yoke. When the rollers are compressed against the outer surfaces of the flange, the tool as a whole is revolved by means of the handle I! until the complete flange has been reformed.

What is claimed is:

A flange reforming tool, for reshaping a circular flange on the outer end of an interiorly threaded nozzle member, comprising a mandrel plug having a threaded end for rigid threaded engagement in said nozzle concentrically thereof, a yoke frame member concentrically and rotatably supported on said mandrel, beyond said threaded end, extending radially outward from said member in right angular relation thereto; a pair of substantially right angular crank arms, each including adjacent leg portions joined at one end, said crank arms each pivotally mounted in said yoke by the other end of one leg portion, in opposed relation to one another diametrically of 'said mandrel, the other leg portions extending angularly outwardly from said yoke, terminating beyond said yoke and mandrel; a flange shaping roller rotatably dependent from each pivotally mounted crank arm portion equidistant from said mandrel; expansion toggle means uniting the terminal ends of said other leg portions of each crank arm for opposed reciprocal movement thereof, whereby a nozzle flange may be com- ROBERT J. IRESON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 359,755 Wicks Mar. 22, 1887 859,644 Cummings July 9, 1907 1,017,403 Garbarino et a1. Feb. 13, 1912 1,160,150 Dowd Nov. 16, 1915 1,204,257 Eberhard Nov. 7, 1916 2,145,587 Draper Jan. 31, 1939 2,182,906 Unke Dec. 12, 1939 2,345,871 Hallberg Apr. 4, 1939 

